CN204676560U - The support changing structure for use of foundation ditch mid-board - Google Patents
The support changing structure for use of foundation ditch mid-board Download PDFInfo
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- CN204676560U CN204676560U CN201520225749.6U CN201520225749U CN204676560U CN 204676560 U CN204676560 U CN 204676560U CN 201520225749 U CN201520225749 U CN 201520225749U CN 204676560 U CN204676560 U CN 204676560U
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Abstract
The utility model relates to the support changing structure for use of foundation ditch mid-board, comprising: the floor being located at each excavation in zones of foundation ditch respectively, and be provided with mid-board between each excavation in zones of foundation ditch, the end of floor stays on mid-board, forms force transferring structure; Floor bar, floor is stretched in one end of floor bar, and the other end of floor bar forms the section of plugging into, and the section of plugging into extends to mid-board and temporarily bends up; Be located at the Vierendeel girder of each excavation in zones of foundation ditch respectively, be installed with Vierendeel girder between Vierendeel girder and mid-board and treat pouring area; And framework beam main tendon, Vierendeel girder is stretched in one end of framework beam main tendon, and the other end of framework beam main tendon is reserved and treated pouring area in Vierendeel girder, forms one and extends into the section of plugging into that Vierendeel girder treats pouring area, in Duan Shangshe straight screw sleeve of plugging into.When mid-board is removed, direct straightening floor bar carries out overlap joint colligation connection, and increase dowel lap joint frame beam steel, then build coagulation and coagulate native communicating structure, shaping structures quality is high, and efficiency is high, and cost is low.
Description
Technical field
The utility model relates to the realm of building construction, espespecially a kind of support changing structure for use being conducive to the foundation ditch mid-board of structure construction quality.
Background technology
Consult shown in Fig. 1, show foundation ditch plane zoning plan; As shown in Figure 1, along with expansion and the adjustment of socioeconomic development and urban road network, in the basement construction of construction projects, due to reasons such as place, safety or funds, when foundation ditch area is larger or the Important building such as contiguous subway time, usually adopt foundation ditch to divide the method for hole construction, namely in the middle of foundation ditch, set up some mid-boards, foundation ditch is divided into several point of hole, constructs successively on request.After each point of hole Underground Construction completes, mid-board is removed, and mid-board both sides basement structure is communicated with, form complete structure.For ensureing security of foundation ditch construction, at each point of hole basement structure construction and horizontal support period for removal, each layer beam slab of basement need form support replacement force transferring structure at mid-board place, to guarantee that foundation ditch is stablized.
According to the requirement of going along with sb. to guard him design, during each subregion Underground Construction, beam slab directly waters to mid-board place, is directly shored and forms force transferring structure, consult Fig. 2 by structural beam slab, shows the support changing structure for use schematic diagram of existing foundation ditch mid-board; As shown in Figure 2, this force transferring structure is removed at later stage mid-board, the through construction of basement beam slab time, need the beam slab concrete first cutting mid-board both sides, strip out reinforcing bar, then carry out the connection of both sides beam slab.But beam slab concrete chisel removal, steel bar peeling except the work such as straightening, secondary connection, time-consumingly to be required great effort again, and concrete chisel removal has vibration damage to structure, and steel bar peeling affects performance except straightening, easily has a negative impact to structure construction quality simultaneously.In addition, the beam slab section of cutting need increase beam slab concrete chisel removal expense, the outer freight charges of broken concrete, concrete secondary builds expense, secondary is built increases formwork erection expense and repeats overlap joint section bar material expense, waste financial resources, therefore need badly and adopt new support replacement way.
Utility model content
The purpose of this utility model is the support changing structure for use providing a kind of foundation ditch mid-board, when solving the through construction of beam slab in prior art, needs the beam slab concrete first cutting mid-board both sides, strips out reinforcing bar, wastes time and energy and affects the problem of construction quality.
For achieving the above object, the utility model provides a kind of support changing structure for use of foundation ditch mid-board, comprising:
Be located at the floor of each excavation in zones of foundation ditch respectively, be provided with mid-board between each excavation in zones of described foundation ditch, the end of described floor stays on described mid-board, forms force transferring structure;
Floor bar, described floor is stretched in one end of described floor bar, and the other end of described floor bar forms the section of plugging into, described in the section of plugging into extend to described mid-board and temporarily bend up;
Be located at the Vierendeel girder of each excavation in zones of described foundation ditch respectively, be installed with Vierendeel girder between described Vierendeel girder and described mid-board and treat pouring area; And
Framework beam main tendon, described Vierendeel girder is stretched in one end of described framework beam main tendon, the other end of described framework beam main tendon is reserved and is treated pouring area in described Vierendeel girder, forms one and extends into the section of plugging into that described Vierendeel girder treats pouring area, in the described section of plugging into, arrange straight screw sleeve.
The beneficial effect of the support changing structure for use of the utility model foundation ditch mid-board:
The utility model is under the prerequisite meeting the effect of foundation ditch support replacement, large, the unpliant characteristic of framework beam main tendon diameter according to little, the easy bending of floor bar diameter, cancel shoring of mid-board place Vierendeel girder, utilize floor as support replacement force transferring structure, namely the floorslab concrete at all mid-board places is directly built and is shored to mid-board, but floor bar needs to stay according to the lap length with adjacent sectors to be established and bends up, mid-board place Vierendeel girder stays establishes one section of not concreting, only reserves framework beam main tendon joint on demand; When middle compartment wall is removed, colligation after floor bar straightening, framework beam main tendon connects according to the method for attachment of sleeve, welding on one side, does not need to cut structural beam slab concrete, saves manually and material, and less to structure construction quality influence.
The further improvement of the support changing structure for use of the utility model foundation ditch mid-board is,
The floor bar be located at respectively in the described floor of each excavation in zones of described foundation ditch is docked by colligation;
The framework beam main tendon be located at respectively in the described floor of each excavation in zones of described foundation ditch is docked by dowel.
The further improvement of the support changing structure for use of the utility model foundation ditch mid-board is, the diameter of described floor bar is less than the diameter of described framework beam main tendon.
The further improvement of the support changing structure for use of the utility model foundation ditch mid-board is, one end of described dowel is connected with the described straight screw sleeve of described mid-board side, and the other end and the described mid-board opposite side Vierendeel girder of described dowel treat that the welding edges of the described framework beam main tendon of pouring area is connected.
The further improvement of the support changing structure for use of the utility model foundation ditch mid-board is, also comprises the fast-easy closing-up net be located at described Vierendeel girder and treated in pouring area.
Accompanying drawing explanation
Fig. 1 is foundation ditch plane zoning plan;
Fig. 2 is the support changing structure for use schematic diagram of existing foundation ditch mid-board;
Fig. 3 is the floor bar node processing floor map before the utility model foundation ditch mid-board is removed;
Fig. 4 is the floor bar node processing floor map after the utility model foundation ditch mid-board is removed;
Fig. 5 is the Vierendeel girder main muscle node processing floor map before the utility model foundation ditch mid-board is removed; And
Fig. 6 is the Vierendeel girder main muscle node processing floor map after the utility model foundation ditch mid-board is removed.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
The utility model provides a kind of support changing structure for use of foundation ditch mid-board, is described below in conjunction with the support changing structure for use of accompanying drawing to the utility model foundation ditch mid-board.
Consult Fig. 1, show foundation ditch plane zoning plan.As shown in Figure 1, in the present embodiment, the whose foundation pit gross area about 3.2 Wan ㎡, according to bracing of foundation pit design point 7 district's constructions, form each excavation in zones, wherein 1 to 3 district's basement is three layer construction, and 4,5,6,7 district's basements near subway side are two-layer structure.Each by stages utilizes diaphragm wall as separation space enclosing structure.Each subregion excavates district by district by designing requirement, after having constructed in first works area, can excavate next subregion.The support changing structure for use of the utility model foundation ditch mid-board is applied in the foundation ditch shown in Fig. 1, consult Fig. 3 to Fig. 6, wherein, Fig. 3 shows the floor bar node processing floor map before the dismounting of the utility model foundation ditch mid-board, Fig. 4 shows the floor bar node processing floor map after the dismounting of the utility model foundation ditch mid-board, Fig. 5 shows the Vierendeel girder main muscle node processing floor map before the dismounting of the utility model foundation ditch mid-board, and Fig. 6 shows the Vierendeel girder main muscle node processing floor map after the dismounting of the utility model foundation ditch mid-board.Shown in composition graphs 3, Fig. 4, Fig. 5 and Fig. 6, foundation ditch mid-board 1 place support changing structure for use comprises: floor 2, floor bar 3, Vierendeel girder 4, framework beam main tendon 5 and dowel 6, floor 2 is constructed respectively in each excavation in zones of foundation ditch, mid-board 1 is provided with between each excavation in zones, the end of floor 2 stays on mid-board 1, floor 2 is stretched in one end of floor bar 3, and the other end of floor bar 3 extends formation one section of plugging into, the section of plugging into temporarily bend up and form that later stage overlap joint colligation connects elbow 30.Vierendeel girder 4 is constructed respectively in each excavation in zones of foundation ditch, be installed with Vierendeel girder between Vierendeel girder 4 and mid-board 1 and treat pouring area 7, Vierendeel girder 4 is stretched in one end of framework beam main tendon 5, the other end of framework beam main tendon 5 exposes Vierendeel girder 4, form one and extend into the section of plugging into that Vierendeel girder treats pouring area 7, the section of plugging into arranges straight screw sleeve 52, and after mid-board 1 is removed, dowel 6 is connected between framework beam main tendon 5.The support changing structure for use of the utility model foundation ditch mid-board is according to the difference of framework beam main tendon and floor bar size, framework beam main tendon not easily bends and the feature that floor bar easily bends, cancel shoring of mid-board 1 liang of marginal frame beam 4, utilize the floor 2 shored as force transferring structure, form support replacement, thus do not need to cut the Vierendeel girder 4 on mid-board 1 both sides and the concrete of floor 2 end, construction costs is low, and easy construction, the duration is short, ambient influnence is little.
Mid-board 1 is diaphragm wall, for foundation ditch is separated into each excavation in zones, is formed and separates space enclosing structure.Floor 2 is built respectively and is formed in each excavation in zones of foundation ditch, and the end of floor 2 stays on mid-board 1, thus makes floor 2 directly shore formation force transferring structure.Floor bar 3 is all reserved with in the floor 2 of the both sides of mid-board 1, one section of floor bar 3 is stretched in floor 2, another elongated segment of floor bar 3 forms the section of plugging into, the section of plugging into temporarily bend up and formed the later stage overlap joint colligation connect elbow 30, the length of elbow 30 needs to stay to establish according to the lap length with adjacent sectors, after mid-board 1 is removed, the elbow 30 of both sides is also given colligation and connects by elbow 30 straightening of the floor bar 3 on the both sides of mid-board 1, then removes district's concreting to connect the floor 2 of mid-board 1 both sides at mid-board 1.In the present embodiment, the diameter of floor bar 3 is 10mm or 12mm, and the diameter of floor bar 3 is less, easily bends, thus floor bar 3 can be bent reserve one section of confession to overlap colligation to connect later.
Vierendeel girder 4 is built respectively and is formed in each excavation in zones of foundation ditch, is installed with Vierendeel girder and treats pouring area 7 between the end of Vierendeel girder 4 and mid-board 1.Framework beam main tendon 5 is all reserved with in the Vierendeel girder 4 on mid-board 1 both sides, one end of framework beam main tendon 5 is goed deep in Vierendeel girder 4, the other end of framework beam main tendon 5 exposes Vierendeel girder 4, be arranged in Vierendeel girder treats pouring area 7, form one and extend into the section of plugging into that Vierendeel girder treats pouring area, thus form fixed end 50 and fixed end 51.The fixed end 50 of the framework beam main tendon 5 of mid-board 1 side stays establishes straight screw sleeve 52, after mid-board 1 is removed, by dowel 6, the framework beam main tendon 5 of mid-board 1 both sides is overlapped connection, one end of dowel 6 is connected with straight screw sleeve 52, and the other end of dowel 6 and the fixed end 51 of framework beam main tendon 5 are welded to connect.In the present embodiment, framework beam main tendon 5 and dowel 6 joint stagger and arrange, with satisfied design and code requirement.Treat to bury fast-easy closing-up net underground in pouring area 7 at Vierendeel girder, fast-easy closing-up net is for stopping that concrete enters Vierendeel girder and treats, in pouring area 7, to play the effect of barrier.In the present embodiment, the diameter of framework beam main tendon 5 is 25mm, not easily bends.Vierendeel girder treats that the length of pouring area 7 is about 1m, substantially meets bar splice and to stagger the requirement of 35d (d is bar diameter).
Below the support replacement method of the utility model foundation ditch mid-board is illustrated:
One, between each excavation in zones of foundation ditch, build mid-board 1, mid-board 1 is diaphragm wall, and foundation ditch is divided into each excavation in zones, first to construct mid-board side basement structure by designing requirement, opposite side basement structure of constructing again after side basement structure construction completes.
Two, as shown in Figure 3, basement floor 2 of constructing in foundation ditch, basement floor 2 is shored to mid-board 1, forms force transferring structure; The floor bar 3 extending basement floor 2 forms the section of plugging into, the section of plugging into of floor bar 3 extends to mid-board 1, stay and set out one section and temporarily bend up along mid-board 1 further, form elbow 30, elbow 30 connects for the overlap joint after mid-board 1 dismounting, in the present embodiment, the diameter of floor bar 3 is 10mm or 12mm, easily bends.
Three, as shown in Figure 5, to construct in each excavation in zones of foundation ditch Vierendeel girder 4, stay between Vierendeel girder 4 and mid-board 1 and establish one section not build, form Vierendeel girder and treat pouring area 7, treat to establish fast-easy closing-up net in pouring area 7 at Vierendeel girder, fast-easy closing-up net is for stopping that concrete enters Vierendeel girder and treats, in pouring area 7, to play the effect of barrier; Because mid-board 1 directly shored by floor 2, form force transferring structure, thus Vierendeel girder 5 do not shore that mid-board 1 can't occur cannot the problem of power transmission.In the present embodiment, Vierendeel girder treats that the length of pouring area 7 is about 1m, substantially meets bar splice and to stagger the requirement of 35d (d is bar diameter).
Four, be embedded in Vierendeel girder 4 by one of framework beam main tendon 5 section, another elongated segment, the formation one of framework beam main tendon 5 extend into the section of plugging into that Vierendeel girder treats pouring area, expose Vierendeel girder 4, form fixed end 50 and fixed end 51.The fixed end 50 of the framework beam main tendon 5 of mid-board 1 side stays establishes straight screw sleeve 52, and straight screw sleeve 52 can be used for screwing togather with framework beam main tendon 5.In the present embodiment, the diameter of framework beam main tendon 5 is 25mm, and the diameter of framework beam main tendon 5 is larger than the diameter of floor bar 3, and framework beam main tendon 5 is not easy bending.
Five, as shown in Figure 4, after mid-board both sides basement structure completes, compartment wall 1 is removed in layering from top to bottom, form the dismounting district of compartment wall 1, elbow 30 straightening of original position in the floor bar 3 of compartment wall 1 both sides, and the elbow 30 of compartment wall 1 both sides is docked, welded the mode of two elbows 30 by colligation, floor bar 3 is overlapped.
Six, as shown in Figure 6, be positioned at the framework beam main tendon 5 of former compartment wall 1 both sides by dowel 6 overlap joint, one end and the straight screw sleeve 52 of dowel 6 screw togather fixing, and the other end of dowel 6 and the fixed end 51 of framework beam main tendon 5 are welded and fixed.
Seven, treat the dismounting district concreting of pouring area 7 and compartment wall 1 at Vierendeel girder, the floor 2 of each excavation in zones is coupled together, the Vierendeel girder 5 connecting each excavation in zones is coupled together, complete mid-board place beam slab and connect.
The beneficial effect of the support changing structure for use of the utility model foundation ditch mid-board is:
One, the utility model is under the prerequisite meeting the effect of foundation ditch support replacement, large, the unpliant characteristic of framework beam main tendon diameter according to little, the easy bending of floor bar diameter, cancel shoring of mid-board place Vierendeel girder, utilize floor as support replacement force transferring structure, namely the floorslab concrete at all mid-board places is directly built and is shored to mid-board, but floor bar needs to stay according to the lap length with adjacent sectors to be established and bends up, mid-board place Vierendeel girder stays establishes one section of not concreting, only reserves framework beam main tendon joint on demand; When middle compartment wall is removed, colligation after floor bar straightening, framework beam main tendon is according to one side sleeve, while the method for attachment of welding connects, do not need to cut structural beam slab concrete, do not need to increase the beam slab end concrete chisel removal expense of the section of cutting, the outer freight charges of broken concrete, concrete secondary build expense, secondary is built and increased formwork erection expense and repeat to overlap section bar material expense yet, easy construction is quick, efficiency is high, greatly shortens the engineering time, has greatly saved construction cost.
Two, the utility model, without cutting beam slab concrete and peeling off the construction link of the main muscle of beam slab, avoids the artificial vibration damage to structural beam slab or destruction; When the later stage divides hole basement through construction, can directly connect beam reinforced steel bar, communicating structure, shaping structures quality is high, is conducive to safety and the durability of building structure.
Below embodiment has been described in detail the utility model by reference to the accompanying drawings, and those skilled in the art can make many variations example to the utility model according to the above description.Thus, some details in embodiment should not formed restriction of the present utility model, the utility model by the scope that defines using appended claims as protection domain of the present utility model.
Claims (5)
1. a support changing structure for use for foundation ditch mid-board, is characterized in that, comprising:
Be located at the floor of each excavation in zones of foundation ditch respectively, be provided with mid-board between each excavation in zones of described foundation ditch, the end of described floor stays on described mid-board, forms force transferring structure;
Floor bar, described floor is stretched in one end of described floor bar, and the other end of described floor bar forms the section of plugging into, described in the section of plugging into extend to described mid-board and temporarily bend up;
Be located at the Vierendeel girder of each excavation in zones of described foundation ditch respectively, be installed with Vierendeel girder between described Vierendeel girder and described mid-board and treat pouring area; And
Framework beam main tendon, described Vierendeel girder is stretched in one end of described framework beam main tendon, the other end of described framework beam main tendon is reserved and is treated pouring area in described Vierendeel girder, forms one and extends into the section of plugging into that described Vierendeel girder treats pouring area, in the described section of plugging into, arrange straight screw sleeve.
2. the support changing structure for use of foundation ditch mid-board as claimed in claim 1, is characterized in that,
The floor bar be located at respectively in the described floor of each excavation in zones of described foundation ditch is docked by colligation;
The framework beam main tendon be located at respectively in the described floor of each excavation in zones of described foundation ditch is docked by dowel.
3. the support changing structure for use of foundation ditch mid-board as claimed in claim 1, it is characterized in that, the diameter of described floor bar is less than the diameter of described framework beam main tendon.
4. the support changing structure for use of foundation ditch mid-board as claimed in claim 1, it is characterized in that, one end of described dowel is connected with the described straight screw sleeve of described mid-board side, and the other end and the described mid-board opposite side Vierendeel girder of described dowel treat that the welding edges of the described framework beam main tendon of pouring area is connected.
5. the support changing structure for use of foundation ditch mid-board as claimed in claim 1, is characterized in that, also comprises the fast-easy closing-up net be located at described Vierendeel girder and treated in pouring area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520225749.6U CN204676560U (en) | 2015-04-15 | 2015-04-15 | The support changing structure for use of foundation ditch mid-board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520225749.6U CN204676560U (en) | 2015-04-15 | 2015-04-15 | The support changing structure for use of foundation ditch mid-board |
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| Publication Number | Publication Date |
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| CN204676560U true CN204676560U (en) | 2015-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520225749.6U Expired - Fee Related CN204676560U (en) | 2015-04-15 | 2015-04-15 | The support changing structure for use of foundation ditch mid-board |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104831736A (en) * | 2015-04-15 | 2015-08-12 | 中国建筑第八工程局有限公司 | Support changing method and support changing structure of middle wall of foundation trench |
| CN105937219A (en) * | 2016-05-26 | 2016-09-14 | 中国建筑第八工程局有限公司 | Force transmission system in foundation pits on two sides of temporary even wall and construction method of system |
-
2015
- 2015-04-15 CN CN201520225749.6U patent/CN204676560U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104831736A (en) * | 2015-04-15 | 2015-08-12 | 中国建筑第八工程局有限公司 | Support changing method and support changing structure of middle wall of foundation trench |
| CN105937219A (en) * | 2016-05-26 | 2016-09-14 | 中国建筑第八工程局有限公司 | Force transmission system in foundation pits on two sides of temporary even wall and construction method of system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150930 Termination date: 20200415 |